Prospect Lopez heads to DL with elbow tightness

Prospect Lopez heads to DL with elbow tightness

PITTSBURGH -- D-backs pitching prospect Yoan Lopez has been placed on the Minor League disabled list after experiencing tightness and stiffness in his elbow.

The right-hander, who was signed out of Cuba for $8.27 million this offseason, was 1-6 with a 4.69 ERA for Mobile. He is ranked No. 5 on the club's top 30 prospects list.

"He's got some elbow stiffness, tightness," D-backs GM Dave Stewart said. "So the thing to do was shut him down. Any time it's an elbow, it's a concern for me. I don't know that organizationally I can speak for everybody, but for me when any of our players complain about elbow stiffness or tightness and you can't make your turn that's a concern for me."

Lopez cost the D-backs more than $16 million to sign last winter because they went over their international signing pool and were forced to pay a 100 percent penalty tax on the $8.27 million bonus.

Steve Gilbert is a reporter for MLB.com. Read his blog, Inside the D-backs, and follow him on Twitter @SteveGilbertMLB. This story was not subject to the approval of Major League Baseball or its clubs.